#include <atcoder/all>
#include <bits/stdc++.h>
using ll = long long;
using ull = unsigned long long;
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define REP(i, m, n) for(int i = (int)(m); i < (int)(n); i++)
using namespace std;
using namespace atcoder;
using mint = modint998244353;
const int inf = 1000000007;
const ll longinf = 1ll << 60;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    vector<string> all;
    rep(i1, 2) rep(i2, 2) rep(i3, 2) rep(i4, 2) {
        string s = "N";
        if(i1)
            s = s + s;
        s += "U";
        if(i2)
            s = s + s;
        s += "P";
        if(i3)
            s = s + s;
        s += "C";
        if(i4)
            s = s + s;
        all.push_back(s);
    }
    sort(all.begin(), all.end());
    int k;
    cin >> k;
    cout << all[k - 1] << endl;
    return 0;
}